21785764

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{5441}}^1$

素因数の和:5476

約数の個数: 48

約数和(自身を含む): 51198336

約数和(自身を除く): 29412572

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 143, 154, 182, 286, 308, 364, 572, 1001, 2002, 4004, 5441, 10882, 21764, 38087, 59851, 70733, 76174, 119702, 141466, 152348, 239404, 282932, 418957, 495131, 778063, 837914, 990262, 1556126, 1675828, 1980524, 3112252, 5446441, 10892882, 21785764]

約数ペア:

[(1, 21785764), (2, 10892882), (4, 5446441), (7, 3112252), (11, 1980524), (13, 1675828), (14, 1556126), (22, 990262), (26, 837914), (28, 778063), (44, 495131), (52, 418957), (77, 282932), (91, 239404), (143, 152348), (154, 141466), (182, 119702), (286, 76174), (308, 70733), (364, 59851), (572, 38087), (1001, 21764), (2002, 10882), (4004, 5441)]